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Old 12-10-2017, 12:57 PM   #16
john61ct
Scraping Paint
 
City: CT
Country: US
Join Date: Mar 2017
Posts: 963
Quote:
Originally Posted by psneeld View Post
top off my 6 golf cart batteries in an hour or so from 80 percent state of charge.
Then you are defining Full way too early.

Try holding Absorb until trailing amps acceptance rate falls to .005C (1/2 Amp per 100AH).

That is 100% Full, and usually takes lead at least 3-4 hours, even for high-CAR AGM chemistries. Stopping significantly earlier drastically shortens bank life.

Obviously burning dino juice to get there is wasteful, but solar can handle that "long tail" beautifully, by using the high-amp fuel sources in the early morning to get to 80-85% first.

Shore power, you have all night, but you need to get Hold Absorb time calibrated correctly, even the best chargers default settings are prone to premature infloatulation.
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